package cn.three.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import cn.three.eneity.Admin;

public class login_filter 	implements Filter{

	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain Chain) throws IOException, ServletException {
			HttpServletRequest req=(HttpServletRequest)request;
			HttpServletResponse res=(HttpServletResponse)response;
			HttpSession  session=req.getSession();
			Admin admin=(Admin)session.getAttribute("admin");
			if(admin!=null){
				Chain.doFilter(request,response);
				
			}else{
				res.sendRedirect("adminlogin.jsp");
			}
		
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		
	}
 
}
